Home / 387,012,721.79-580,304,931.64-153,606,983.87

Finding the Fourth Proportional to 387,012,721.79, 580,304,931.64 and 153,606,983.87

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Solution

The fourth proportional to 387,012,721.79, 580,304,931.64 and 153,606,983.87 is: 230,325,478.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,012,721.79 : 580,304,931.64 = 153,606,983.87 : x
  2. Step 2: Convert to fraction form
    387,012,721.79/580,304,931.64 = 153,606,983.87/x
  3. Step 3: Cross multiply
    387,012,721.79x = 580,304,931.64 × 153,606,983.87
  4. Step 4: Simplify right side
    387,012,721.79x = 89,138,890,272,338,192
  5. Step 5: Solve for x
    x = 89,138,890,272,338,192/387,012,721.79
  6. Step 6: Final answer
    x = 230,325,478.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.